Files
nushell/crates/nu-std
Tyarel8 a234e6ff51 feat(std/help): add is_const information (#16032)
# Description

I wanted to know if `version` is a const command and thought that it
would be in the "This command" section but it wasn't, so I added it.
```
→ help version
Display Nu version, and its build configuration.

Category: core

This command:
 Creates scope         | 
 Is built-in           | 
 Is const              | 
 Is a subcommand       | 
 Is a part of a plugin | 
 Is a custom command   | 
 Is a keyword          | 
```
2025-06-23 23:22:58 +03:00
..
2023-04-07 13:39:21 -07:00

Welcome to the standard library of `nushell`!

The standard library is a pure-nushell collection of custom commands which provide interactive utilities and building blocks for users writing casual scripts or complex applications.

To see what's here:

> use std
> scope commands | select name description | where name =~ "std "
#┬───────────name────────────┬───────────────────description───────────────────
0│std assert                 │Universal assert command
1│std assert equal           │Assert $left == $right
2│std assert error           │Assert that executing the code generates an error
3│std assert greater         │Assert $left > $right
4│std assert greater or equal│Assert $left >= $right
             ...                                     ...
─┴───────────────────────────┴─────────────────────────────────────────────────

🧰 Using the standard library in the REPL or in scripts

All commands in the standard library must be "imported" into the running environment (the interactive read-execute-print-loop (REPL) or a .nu script) using the use command.

You can choose to import the whole module, but then must refer to individual commands with a std prefix, e.g:

use std

std log debug "Running now"
std assert (1 == 2)

Or you can enumerate the specific commands you want to import and invoke them without the std prefix.

use std ["log debug" assert]

log debug "Running again"
assert (2 == 1)

This is probably the form of import you'll want to add to your env.nu for interactive use.

✏️ contribute to the standard library

You're invited to contribute to the standard library! See CONTRIBUTING.md for details